Annual report pursuant to Section 13 and 15(d)

Allocation of Cash Proceeds Derivative Liability at Its Fair Value and Warrant at Its Relative Fair Value, with Residual Allocation of Host AVCP Note Agreement (Detail)

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Allocation of Cash Proceeds Derivative Liability at Its Fair Value and Warrant at Its Relative Fair Value, with Residual Allocation of Host AVCP Note Agreement (Detail) - USD ($)
3 Months Ended 12 Months Ended
May. 31, 2015
May. 31, 2015
Feb. 06, 2015
Sep. 26, 2014
May. 31, 2013
Debt Instrument [Line Items]          
Amortization Debt Discount $ 523,614 $ 523,614      
Change in Fair Value 838,643 838,643      
Balance 4,862,257 4,862,257 $ 1,500,000 $ 2,000,000 $ 3,981,050
Warrants (equity allocation)          
Debt Instrument [Line Items]          
Balance 215,732 215,732 57,387 158,345  
Compound Embedded Derivative          
Debt Instrument [Line Items]          
Change in Fair Value 838,643        
Balance 2,008,907 2,008,907 403,226 767,038  
AVCP convertible note payable          
Debt Instrument [Line Items]          
Amortization Debt Discount 523,614        
Balance $ 2,637,618 $ 2,637,618 $ 1,039,387 $ 1,074,617